Derailer.



DERAILER.

APPLICATION FILED NOV-L191? Patented Apr. 22, 1919.

- QH/UMVI'OL L I. E. Gray is 1T STATES JAMES C. GRAVIS, OF LAREDO,TEXAS.

DERAILER.

Specification of Letters Patent.

l;atented 11p r. 25 3, 151111.

Application filed November 7, 1917. Serial No. 200,735.

To all whom it may concern:

Be it known that 1, JAMES C. GRAVIS, a citizen of the United States, anda resident of Laredo, in the county of lVebb and State of Texas, haveinvented certain new and useful IIIIPI'OVQMQDtS in Derailers, of whichthe following is a specification.

This invention relates to derailers and more particularly to an improvedderailing frog for railway rails adapted to engage the wheels of alocomotive or'railw'ay car for derailing the same. I

One of the principal objects of the invention is to provide a derailerof this character that may be easily and quickly applied to the rail andheld thereto without the use of fastening means such as bolts, spikesand the like.

One of the objects of the invention is to provide a derailer of thischaracter that will include a portion which has initial engagement withthe wheel and which is similar in form to a switch point whereby thetendency of the wheel will be to force the device in tight engagementwith the rail upon which it is mounted thus preventing displacementwhile the derailing operation is in progress.

A further object of the invention is to provide a derailer of thischaracter that will be simple in construction and durable andinexpensive to manufacture and well adapted to withstand the rough usageto which devices of this character are ordinarily subjected.

Other objects of the invention will be readily apparent from aconsideration of the following detailed description and of theaccompanying drawing, wherein:

Figure 1 is a perspective view of the outside of a section of a railwayrail showing my invention applied thereto.

Fig. 2 is a perspective view of the opposite side.

Fig. 3 is a plan view.

Fig. 4 is a section taken on the line 4-i of Fig. 3.

Fig. 5 is a section taken on the line 55 of Fig. 3.

Fig. 6 is a longitudinal section taken on the usual. tie B and thederailer indicated generally at C is adapted to be applied to the rail.11 tread plate 1 overlies the top of the ball of the rail and, as shownto advantage in Fig. 6, this tread plate tapers from a thin front edgeas indicated at 2 to a thickened end portion 3 thus causing the treadplate to have an upward inclined sur face for raising the wheel of arailway carriage when the same passes over the plate. The top of theportion 3 should be approximately three-quarters of an inch higher thanthe edge 2 so that the wheel will be raised three-quarters of an inchwhen it reaches the highest point on the tread plate 1. To preventlateral displacement of the plate 1 from the rail, I have provided aretaining flange 4 which formed on the outer marginal edge of the plateand depends therefrom to engage the side of the ball of the rail asclearly shown in Fig. 1 of the drawing.

Atthe opposite side of the plate, I have provided a deflector 5 which,in this instance, is in the form of a metallic shell the main bodyportion of which is convexed in contour and has a substantially diagonalridge 6 transversely rounded as shown to advantage in Fig. 4 of thedrawing, and longitudinally curved as shown in Fig. 1. This ridge 6,beginning at a point near the base flange of the rail rises in a gradualcurve to a point above the top of the rail and the surface of the plate1 and merges into the thickened portion 3 at the end of the plate 1. Theside of the ridge 6 forms a deflecting surface 7 adapted to engage thewheel as it passes over the plate 1. The

point 8 from which the ridge 6 begins, is.

laterally spaced from the base of the rail thus forming a recess 9 whichcontinues upwardly between the rail and the ridge forming an inclinedgroove or runway 10, the top of which merges into the surface of theplate 1. Formed with the marginal edge of the plate 1 opposite to theflange 41., is a lip 11 and the same has an elongated extension 12, theend of which is tapered to a thin edge as indicated at 13 to facilitateengagement of the wheel flange with the lip when the wheel is to bederailed.

As shown in Figs. 4 and 5 of the drawing, the body portion of thedeflector is hollow thus providing a relatively thin wall of suitablemetal, the marginal edge of which engages the tie B. This marginal edgeis pro vided with a pair or teeth or prongs l-l adapted to embedthemselves in the tie to prevent longitudinal movement of the deviceWhen in operation.

It is to be observed that the lip 11 merges int the runway 10 at a pointbeyond the edge 2 of the plate 1 so that the rail is completely coveredby the plate and the flange 4. and the lip 11 at a point adjacent therun way 10 so that the Wheel is mounted entirely upon the device beforethe deflecting operation is started. When the flange of the wheel comesinto contact with the runway 10, the wheel will immediately rise andsince the runway merges into the inclined surface of the plate 1, therising action will continue until the end of the plate is reached. Thesurface 7 at the side of the ridge 6 extends transversely across theraised end of the plate and, therefore the wheel will be forced towardthe outer surface of the plate and will drop from the edge thereof andconsequently be derailed.

The device will be found to be especially valuable for preventing rearend collisions and for protecting worln'nen since one of the derailersmay be placed at a point remote from the rear end or a train or thepoint at which the workmen are employed and any advancing rolling stockwill be immediately derailed.

From the foregoing it will be observed that a very simple and durablederaile has been provided the details of which are embodied in thepreferred form. I desire it to be understood, however, that slightchanges may be made in the details of construction without departingfrom the spirit of the invention or the scope of the claims hereuntoappended.

I claim:

1. A derailer comprising a plate, a retaining flange formed on one edgeor" the plate a .lip formed on the opposite edge and in cluding anextension having a tapered end extending beyond the end of the saidplate, a deflector comprising a longitudinally curved ridge having onesurface merging into the said plate near one end thereof.

A derailer comprising a plate, a convex body having a transverselyrounded and longitudinally curved ridge extending substantiallydiagonally with respect to said plate and merging into the latter, a lipformed upon the edge of the plate adjacent the said body and includingan extension having a tapered end extending beyond the end of saidplate' 3. A derailer comprising an inclined plate, a deflector formedcontiguous therewith and having its surface merging into the plate,means formed upon said plate for maintaining the plate in positionagainst lateral movement, and prongs formed upon said deflector forembedding in a tie to maintain the plate and deflector againstlongitudinal displacement.

d. A derailer comprising a plate, a retaining flange formed on one edgeof the plate, a lip formed on the opposite edge and including anextension having a tapered end extendingbeyond the end of said plate, adeflector comprising a longitudinally curved ridge and having onesurface merging into said plate near one end thereof, and prongs formedupon said deflector and adapted for embedding in a tie to maintain theplate and deflecto against longitudinal displacement.

JAMES e. eaavis.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

' Washington, D. G.

